<div class="block-header">Customers</div>
<div class="box">
    <table class="table" rules=all>
        <tr>
            <td width="30px;"><input type="checkbox" id="all_users"></td>
            <td>Name</td>
            <td>Email</td>
            <td>Role</td>
            <td>Groups</td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td></td>
            <td></td>
            <td></td>
        </tr>
    </table>
</div>